gauge.cpp

SNMP++程序源码 for ll .8snmp++2_8.tar.Z 嵌入式linux环境下的SNMP开发代码

/*===================================================================

  Copyright (c) 1999
  Hewlett-Packard Company
 
  ATTENTION: USE OF THIS SOFTWARE IS SUBJECT TO THE FOLLOWING TERMS.
  Permission to use, copy, modify, distribute and/or sell this software 
  and/or its documentation is hereby granted without fee. User agrees 
  to display the above copyright notice and this license notice in all 
  copies of the software and any documentation of the software. User 
  agrees to assume all liability for the use of the software; Hewlett-Packard 
  makes no representations about the suitability of this software for any 
  purpose. It is provided "AS-IS without warranty of any kind,either express 
  or implied. User hereby grants a royalty-free license to any and all 
  derivatives based upon this software code base. 



  G A U G E. C P P

  GAUGE32 CLASS IMPLEMTATION

  VERSION:
  2.8

  DESIGN:
  Peter E Mellquist

  AUTHOR:
  Peter E Mellquist

  LANGUAGE:
  ANSI C++

  OPERATING SYSTEMS:
  MS-Windows Win32
  BSD UNIX

  DESCRIPTION:
  Class implemtation for SMI Gauge32 class.

=====================================================================*/
char gauge_cpp_version[]="@(#)SNMP++ 2.8 $Header: gauge.cpp,v 1.10 96/09/11 14:01:50 hmgr Exp $";

#include "gauge.h"	  // header file for gauge class

// constructor, no value
Gauge32::Gauge32( void):SnmpUInt32()
   { smival.syntax = sNMP_SYNTAX_GAUGE32;};

// constructor with a value
Gauge32::Gauge32( const unsigned long i):SnmpUInt32(i)
   { smival.syntax = sNMP_SYNTAX_GAUGE32;};

// copy constructor
Gauge32::Gauge32 ( const Gauge32 &g)
   { this->smival.value.uNumber = g.smival.value.uNumber;
     smival.syntax = sNMP_SYNTAX_GAUGE32;
     valid_flag = 1;
   };

// destructor
Gauge32::~Gauge32() 
{};

// syntax type
SmiUINT32 Gauge32::get_syntax()
{ return sNMP_SYNTAX_GAUGE32; };

// overloaded assignment
Gauge32& Gauge32::operator=( const Gauge32 &uli)
   { this->smival.value.uNumber = uli.smival.value.uNumber;
     return *this;};

// overloaded assignment
Gauge32& Gauge32::operator=( const unsigned long int i)
   { smival.value.uNumber=i; return *this;};

// general assignment from any Value
// TODO: this is broken if not inherited from UInt32 (see UInt32 code).
SnmpSyntax& Gauge32::operator=( SnmpSyntax &in_val){

  if ( this == &in_val )	// handle assignement from itself
      return *this;

  valid_flag = 0;		// will get set true if really valid
  if (in_val.valid())
  {  
    switch (in_val.get_syntax())
    {
      case sNMP_SYNTAX_UINT32:
      case sNMP_SYNTAX_GAUGE32:  	
      case sNMP_SYNTAX_CNTR32:
      case sNMP_SYNTAX_TIMETICKS:
      case sNMP_SYNTAX_INT32:		// implied cast int -> uint 
	  this->smival.value.uNumber = 
		((Gauge32 &)in_val).smival.value.uNumber;  
  	  valid_flag = 1;
	  break;
    }
  }
  return *this;
};

// otherwise, act as unsigned long
Gauge32::operator unsigned long()
{ return smival.value.uNumber; };

// clone - create a new instance of this Value
SnmpSyntax* Gauge32::clone() const 
{ return ( SnmpSyntax *) new Gauge32(*this); };